package com.sunrise.generico.bean;

/*
* Copyright 2013 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.util.CookieGenerator;
/**
* Utility class for managing the quick_start user cookie that remembers the signed-in user.
* @author Keith Donald
*/
final class UserCookieGenerator {

        private final CookieGenerator userCookieGenerator = new CookieGenerator();

        public UserCookieGenerator() {
                userCookieGenerator.setCookieName("quickstart_user");
        }

        public void addCookie(String userId, HttpServletResponse response) {
                userCookieGenerator.addCookie(response, userId);
        }
        
        public void removeCookie(HttpServletResponse response) {
                userCookieGenerator.addCookie(response, "");
        }
        
        public String readCookieValue(HttpServletRequest request) {
                Cookie[] cookies = request.getCookies();
                if (cookies == null) {
                        return null;
                }
                for (Cookie cookie : cookies) {
                        if (cookie.getName().equals(userCookieGenerator.getCookieName())) {
                                return cookie.getValue();
                        }
                }
                return null;
        }

}